Foswiki is an Enterprise wiki, typically used to run a collaboration platform, knowledge base or document management system. Users can create wiki applications using the Topic Markup Language, and developers can extend its functionality with plugins.
Foswiki stands for "Free and Open Source" wiki to emphasize its commitment to Open Source software.

I started this project because I wanted a dead-simple blog. One that didn't need a database, used flat text files, and looked nice. It's main advantage is that it only requires PHP 5 and write permissions. There is no setup, just unzip and copy.

PhpGedView is a revolutionary genealogy program which allows you to view and edit your genealogy on your website. It has full privacy functions, can import from GEDCOM files, and supports multimedia. It also simplifies family collaboration.

ClickHeat is a visual heatmap of clicks on a HTML page, showing hot and cold click zones. Requires Javascript on the client to track clicks, PHP and GD on the server to log clicks and generate the heatmap.

OpenX (phpAdsNew) is an open-source ad server, with an integrated banner management interface and tracking system for gathering statistics. With OpenX you can easily rotate paid banners and your own in-house advertisements.